In an interview with E! News that aired Thursday, the 21-year-old Wasilla, Alaska native discussed the former Vice Presidential candidate's flirtation with him. "When I was growing up, some of my friends were like [Sarah Palin's behavior towards you] seems kinda weird," he said. "They were like, 'I think she likes you.'"

Johnston said his "ghost writers" for his tell-all book Deer in the Headlights: My Life in Sarah Palin's Crosshairs (which came out Tuesday) pointed out the 47-year-old former Governor of Alaska had the hots for him. "[They said] to me, 'Hey! I think she had a cougar crush on you.'"

Johnston also talked to E! about Bristol's pregnancy. (The duo welcomed son Tripp in 2008.) "Bristol wanted to have a baby," he said. "It all happened on purpose, and I was dumb enough just to roll with hit."